A new diamond-related compound in the system Al{sub 2}O{sub 3}-Al{sub 4}C{sub 3}-AlN

Journal Article · Fri Dec 01 04:00:00 EST 1995 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1006/jssc.1995.1400· OSTI ID:283003

Groen, W A; Kraan, M J; Hal, P.F. van; De Veirman, A E.M. ^[1]

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1. Phillips Research Laboratories, Eindhoven (Netherlands)

A new compound has been identified in the system Al{sub 2}{sub 3}-Al{sub 4}C{sub 3}-AlN, which crystallizes in a diamond-related structure. This compound, for which the acronym {open_quotes}Alcon{close_quotes} is used, has the composition Al{sub 28}O{sub 21}C{sub 6}N{sub 6}. ALCON crystallizes in a rhombohedral space group (R - 3m, no. 166): a = 5.459(2) {angstrom} and c = 14,952(6) {angstrom} (hexagonal description) or a = 5.897(2) {angstrom} and {alpha} = 55.15(4){degrees} (rhombohedral description). ALCON is a compound with a very limited phase width with respect to the molar C/O ratio and the aluminum content. Electron diffraction results are in agreement with the structure as determined by X-ray powder diffraction. High-resolution transmission electron microscopy revealed the existence of twin defects in the (100) plane (hexagonal description).

• OSTI ID: 283003
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 2 Vol. 120; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM CARBIDES
ALUMINIUM NITRIDES
ALUMINIUM OXIDES
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
ELECTRON DIFFRACTION
TRANSMISSION ELECTRON MICROSCOPY
TRIGONAL LATTICES
TWINNING
X-RAY DIFFRACTION